Jewel Cave National Monument
11149 US-16 B-12
Custer, SD  57730

60 min
Operating hours
Open Year-Round
See park website for operating hours & seasonal changes
Detailed Tour Costs Below

Jewel Cave National Monument is the third longest cave in the world with over 200 miles explored. The mileage continues to grow as researchers discover an average of three miles of new passageways each year luring explorers to its maze of endless tunnels.